Claude Code v2.1.278

Claude Code v2.1.278 was released on .

Summary

Claude Code 2.1.278 now runs auto mode more efficiently by defaulting to server-side processing, which means no extra charges for most users. We've also added better visibility into how your auto mode is working. Check out the full details to see what this means for your workf...

Release Context

  • This was the 223rd Claude Code release of 2026 tracked by Havoptic.
  • It shipped the same day as Claude Code v2.1.277 (September 18, 2026).
  • Claude Code: ships every 0.9 days — 32 releases in the last month.

Why it matters: Auto mode now runs free on the server.

Shipped around the same time

Within 3 days of this release, other AI coding tools also shipped:

Compare Claude Code: vs OpenAI Codex CLI · vs Cursor · vs Gemini CLI · vs Kiro CLI · vs GitHub Copilot CLI · vs Devin Desktop · vs Antigravity CLI · vs Grok Build

Release Notes

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